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HP PageWide Enterprise Color 556 - Removal and replacement: Control panel (556)
This document provides the procedures to remove and replace the control panel (556).
Mean time to repair: 10 minutes
Service level: Basic
Before performing service
Turn the printer power off
  • Disconnect the power cable.
      warning:
    To avoid damage to the printer, turn the printer off, wait 30 seconds, and then remove the power cable before attempting to service the printer.
Use the table below to identify the correct part number for your printer. To order the part, go to www.hp.com/buy/parts.
Control panel (M556) part number
G1W41-67907
Control panel (M556) with instruction guide
Required tools
  note:
A reversible-shaft screwdriver is supplied with this kit.
  • Torx driver (#10 with magnetized tip).
  • Small flat-blade screwdriver.
After performing service
Turn the printer power on
  • Connect the power cable.
  • Use the power switch to turn the power on.
Post service test
Make sure that the printer initializes to a Ready state.
Access the menus by using the printer control panel, and then print a configuration page to make sure that the printer is functioning correctly.
Verify that the control panel is correctly functioning. See the control panel check section in the printer troubleshooting manual.
  1. Remove the control panel (556)
    1. Tilt the control panel to the fully raised position.
      Figure : Tilt the control panel up
    2. Insert a small flat-blade screwdriver into the notch in the cover, and then carefully pry up the cover to release it. Remove the cover.
      Figure : Release two tabs
    3. Remove two # 10 torx screws (callout 1).
        caution:
      Store the screws in a secure place where they cannot fall down into the printer.
      Figure : Remove two screws
    4. Lift up the rear edge of the control panel (callout 1), and then slightly slide it toward the rear of the printer (callout 2) to release the front tabs.
      Figure : Release the control panel over
    5. Turn the control panel over (callout 1), to gain access to the bottom side.
      Figure : Turn the control panel over
    6. Disconnect one HDMI cable (callout 1) and one connector (callout 2), and then remove the control panel.
      Figure : Disconnect connectors and remove the control panel
  2. Unpack the replacement assembly
    1. Dispose of the defective part.
        note:
      HP recommends responsible disposal of the defective part.
    2. Unpack the replacement part from the packaging.
        caution:
      If the replacement part is a roller or pad, avoid touching the spongy part of it. Skin oils on the roller or pad can cause paper pickup and/or print-quality problems. HP recommends using disposable gloves when handling rollers or pads or washing your hands or before touching rollers or pads.
        note:
      Make sure that all of the shipping materials (for example shipping tape) are removed from the replacement part prior to installation.
  3. Install the control panel (556)
    1. Connect one HDMI cable (callout 1) and one connector (callout 2).
      Figure : Connect cables
    2. Install the tabs (callout 1) on the front of the control panel in the slots (callout 2) on the printer top cover.
      Figure : Install the control panel
    3. With the front tabs engaged in the slots (callout 1), rotate the control-panel base down onto the printer (callout 2).
      Figure : Rotate the control-panel base down
    4. Install two # 10 torx screws (callout 1).
      Figure : Install two screws
    5. Position the access cover mounting feet into the slots in the top cover (callout 1), and then rotate the cover down (callout 2) to install it.
        note:
      Press down on the cover firmly to make sure that the tabs (callout 3) snap into place.
      Figure : Install the cover

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